Flame-proof insulation.



as'rwuTE FOR \WSSl if purpose may be Sit l l l s'ra'rns earner E-OLRLETON ELLIS, OF

LABORATORIES, A CORPORATION OF Nee 1,246,809. No Drawing. Applicationfiled July 26, 1915,

To all whom it may concern:

Be it known that I, Cameron ELLIS, a citizen of the United States, and aresident of Montclair, in the county of Essex and State of New Jersey,have invented certain new and useful Improvements in Flame- ProofInsulations, of which the following ls a specification.

This invention relates to what may be termed flame proof" insulation andrelates especially to a composition comprising chlorinated petroleummaterial and the like.

Chlorinated bodies or mixtures suitable for the purpose may with chlorinvarious petroleum oils such as mineral and asphaltic oils of a more orless unsaturated character. The heavy oils of Texas and particularly theMexican oils are well suited for this purpose. Other oils preferablycontaining some asphaltic material may be used. The residues fromcracking stills also afford products which may be used for the presentpurpose. By treating these various oils with chlorin using iodin orsimilar carrier to aid in the chlorination a considerable amount ofchlorin may be introduced either by addition or substitution andchlorinated products are obtained which do not ignite readily whenexposed to flame and which possess the characteristics termed flameproof. This means that the composition does not readily transmit flame,so that a wire coated with the material if ignited under test conditionsat one point does not permit the flame to travel along the insulationfor an indefinite distance.

A suitable composition forv the present obtained by chlorinating heavyMexican oils at a temperature of 80100 (1, using iodin as a carrier. Themay be removed by heating or washing with alkaline solutions. Thecomposition is applied to the conducting material such as a copper wireand this application may be made directly to the metal or to a coatingof some insulating material such as rubber already sur-v rounding themetal. The flame proof coating may be formed as an annular or concentriclayer surrounding the wire and concentric insulating material. In somecases an inner layer of rubber may be used and over this a fabric ofcotton material or the like may be woven and this fabric immersed inSpecification of Letters Patent.

be obtained by treating.

NEW JERSEY. I I

nL'AME-rnoor INSULATION.

Patented Nov. 13, 191 v.

the-chlorinated composition to form a coatmg which has the flame proofqualities reuired.

\ The p lrloripatedpetro eum oil may be admixed with other bodies' suchas waxes or chlorinated waxes, asphaltic oils and the like vvmenaieebmauble with" the adjacent insulation in the case rubber and the like isused. The flame proof composition should be compatibfiitlitherubber whenthe latter 18 used and not cause the rubber to soften, crack or decayprematurely. Under these circumstances it may be necessary to have allvolatile oils and rubber softening material removed from the petroleumproduct as this material frequently contains substances which tend tocause decay of rubber. In this manner there is obtained a compatiblecoating composition which effectively flame proofs the exterior, and atthe same time is without deleterious action on the interior layers.

Ghlorinated fish Oll dissolved in asphaltic oil or tar may be employedin conjunction wlth the foregoing. Other chlorinated bodies such ashighly chlorinated naphthalene may also be incorporated with the abovementioned bodies.

- What Claim is 1. An insulating composition comprising a chlorinatedproduct of heavy petroleum incorporated with. other insulating material.

2. insulating composition comprising chlorinated petroleum oil admixedwith combustible organic plastic insulating material in proportion torender the composition substantiall" flame proof. WWW WM'MV 3. Anih'sultit'fliidriiposition comprising aproduct of a plastic naturecontaining chlorinated petroleum admixed with combustible material of aplastic nature, the proportion of the former being sufficient to reducethe 1nflammability to an extent such that if ignited at any given spotthe flame does not travel along the surface of the material for anysubstantial distance but is quickly extinguished by the presence of thechlorinated material.

{L An insulating composition comprising a chlorinated mineral oilproduct admixed with other insulating material, the proportion of theformer being sufficient to reduce the inflammability to an extent suchthat if ignited at any given spot the flame does not SEARCHRO'OMMONTCLAIR, NEW JERSEY, ASSIGNOR TO NEW JERSEY TESTING Serial No. 41,924.Renewed September 14, 1917. Serial 7 I m.1e1,5o2.

readily travel along the surface of the composition for any substantial.distance but is duly extinguished by the chlorinated component.

5. An insulating composition comprising 7 a chlorinated oil productadmixed with other insulating material, the proportion of the formerbeing sufficient to reduce the inflammability to an extent such that ifignited at any given spot the flame does not readily travel along thesurface of the composition for any substantial distance but isextinguished by the presence of the chlorinated com-f ponent.

6. An insulating composition comprising a chlorinated product ofetroleum incorporated with other insulating material.

7. An insulating composition comprising a mixture containing asubstantially fixed chlorinated oil admixed with combustible organicplastic insulating material in proortion to render the compositionsubstantially flame proof.

8. An insulating composition comprising a product of a plastic naturecontaining chlorinated asphaltic oil material admixed with combustibleinsulating material of a plastic nature, the proportion of the formerbeing sufficient to reduce the infiammability to an extent that ifignited'at any given spot the flame does not travel along the surface ofthe material for any substantial distance but is quickly extinguished bythe presence of the chlorinated material.

9. An insulating composition comprising combustible insulating materialincorporated with the non-volatile chlorinated derivatives of asphalticmaterial; the proportion of the latter being suiiicient to reduce theinflammability to an extent such that if ignited at any given spot theflame does not travel along the surface of the composition for anysubstantial distance but is duly extinguished by the presence of thechlorinated constituent.

10. An insulating composition adapted for use in the coating of Wirecomprising plastic insulating material incorporated with chlorinatedorganic material Comprising chlorinated asphaltic oil of anon-inflammable character; sufiicient of the latter being present torender the composition substantially flame proof.

' CARLETON ELLIS.

